Lovely Annie Men's 5 Pairs Pack Rabit Hair&Wool Crew Socks Size 7-11 Stripped Polyester 55.5%/Polyacrylonitrile 31%/Wool 6%/Rabbit hair 4%/Nylon 3.5% Imported A major compoent of Polyacrylonitrile which has the properties of low density, thermal stability, high strength and modulus of elasticity.Polyester fiber provides the stretch component and thus make these socks streatchable and higly elastic! Thickness: Medium Level Comfort Level: soft and very comfort Weight: 55g per pair Machine wash warm, no bleach, no iron, tumble dry low. Style: Crew Socks with 8 inches from the heel to the top of the cuff